During the Covid 19 pandemic (corona virus diseases 19) there
are many businesses experiencing disruption such as retail,
hospitality, travel, shopping malls, property, office rentals, etc.
Instead, there are some businesses are booming, such as e-commerce,
online schooling, webinars or online training, sports equipment at
home and others. As is known, before the vaccine of that covid 19
was discovered, it is predicted that the duration of this pandemic
will plague within the next 1-2 years. In this period, most...